Table II.
Estimated cumulative occurrence of drug use by birth cohort, and estimates from discrete time survival analysis models
| Birth cohort | Alcohol
|
Tobacco
|
Cannabis
|
Other drugs (e.g. cocaine)
|
Extra-medical
|
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | SE | OR | 95% CI | % | SE | OR | 95% CI | % | SE | OR | 95% CI | % | SE | OR | 95% CI | % | SE | OR | 95% CI | |
| 1912 – 1954 | 35.3 | 2.3 | 1.0 | - | 33.7 | 2.2 | 1.0 | - | 5.9 | 1.3 | 1.0 | - | 1.0 | 0.5 | 1.0 | - | 16.6 | 2.6 | 1.0 | - |
| 1955 – 1964 | 42.8 | 2.8 | 1.4 | 1.1 – 1.7 | 33.4 | 2.9 | 1.0 | 0.8 – 1.3 | 6.9 | 1.2 | 1.2 | 0.6 – 2.2 | 1.5 | 0.7 | 1.6 | 0.6 – 3.9 | 17.1 | 1.8 | 1.0 | 0.7 – 1.6 |
| 1965 – 1974 | 39.1 | 1.8 | 1.2 | 0.9 – 1.5 | 28.6 | 1.7 | 0.8 | 0.6 – 1.0 | 8.0 | 1.3 | 1.4 | 0.8 – 2.5 | 2.9 | 0.6 | 3.1 | 1.0 – 9.9 | 21.9 | 2.2 | 1.4 | 0.9 – 2.2 |
| 1975 – 1986 | 38.3 | 1.8 | 1.1 | 0.9 – 1.4 | 27.3 | 1.3 | 0.7 | 0.6 – 1.0 | 10.6 | 1.0 | 1.9 | 1.2 – 3.0 | 2.3 | 0.6 | 2.5 | 0.8 – 8.2 | 20.3 | 1.8 | 1.3 | 0.9 – 1.8 |
| Total | 38.7 | 1.2 | 30.0 | 1.1 | 8.4 | 0.6 | 2.0 | 0.4 | 19.3 | 1.5 | ||||||||||
| p-value | 0.158 | 0.037 | 0.038 | 0.173 | 0.145 | |||||||||||||||